The analog input module is one of the most versatile modules in the system. It can be either optically isolated with two different power options, or non-isolated. Also, the A/D module can be a less expensive PIC16C710 which will allow for simple digital filtering, or a discrete A/D that can have the input voltage scale adjusted to suit the measured device. A brief functional block diagram is provided to describe the module as a whole system. Each block is a link to further explanation of each sub-circuit.
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Isolated 5 V |
11 mA |
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Non-isolated 5 V |
3.5 mA |
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Linear Opto-Isolator |
$6.00 |
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8-Bit A/D Converter |
$10.00 |
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Module Interface |
$1.00 |
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DC-DC Converter |
$7.00 |
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$22.00 |
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